Diagrams.so review
A Draw.io-focused AI diagram generator with validation, imports, exports, and developer access.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Diagrams.so is a browser-based AI diagram generator for architects, DevOps engineers, technical founders, and engineering teams. It turns natural-language descriptions into editable Draw.io diagrams and supports AWS, Azure, GCP, and Kubernetes icon libraries. The product also covers flowcharts, sequence diagrams, ERDs, and infrastructure diagrams, making it suited to teams that want architecture work to remain editable rather than limited to static images.
The Free plan costs $0 and includes BYO LLM key, architecture warnings, Voice-to-Diagram, unlimited .drawio imports, Community Gallery & Fork, and watermarked exports. Pro costs $10 per month with annual billing or $15 per month with monthly billing, adding One-click Fix all issues, Opinionated Mode, private diagrams, and clean exports. Power costs $16.67 per month with annual billing or $25 per month with monthly billing, adding Image to Diagram, PDF and DOCX to Diagram, a priority generation queue, and priority support.
Its ecosystem fit is a central strength: users can import and edit existing .drawio files, restore earlier versions, fork community diagrams, and export to PNG, SVG, PDF, JPG, and .drawio. REST API, MCP server, and Python and TypeScript SDK access extend the product beyond the browser. Architecture warnings and validation add a review layer for infrastructure diagrams. Choose Diagrams.so when editable Draw.io output, cloud icon libraries, and developer integrations matter. Choose another tool if Mermaid support or unwatermarked Free exports are essential.
Diagrams.so pros and cons
- Where it wins
- Generates editable Draw.io diagrams from natural-language descriptions
- Includes architecture warnings, validation, and version history
- Offers REST API, MCP server, and Python and TypeScript SDKs
- Where it doesn't
- Free exports are watermarked
- Free plan requires a BYO LLM key
- Does not support Mermaid
Diagrams.so fact sheet, pricing and score →
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